Why Vacuum Door Locks Fail: Testing and Replacing the Key Component

Fixing the vacuum door locks on my W123 240D proved to be pretty easy. That is not always the case with vacuum door lock systems. But I got lucky here and had all the locks all working in under 2 hours. Let me show you what it took. Click on SHOW MORE.

Link to complete W123 door lock troubleshooting manual:

Link to Diesel vacuum system troubleshooting manual:

Link to door lubrication kit:

Link to door lock repair parts:

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